C.I. FoodYellow10, also known as Fast Yellow AB or Acid Yellow, is an azo dye used primarily as a food dye that is now delisted in both Europe and USA and is forbidden if used in foods and drinks. Ungraded products supplied by Spectrum are indicative of
Quinoline Yellow WS is a mixture of organic compounds derived from the dye Quinoline Yellow SS (Spirit Soluble). Owing to the presence of sulfonate groups, the WS dyes are water-soluble (WS). It is a mixture of disulfonates (principally), monosulfonates a